<template>
  <div>
    <el-container>
        <el-aside width="200px" :width="isCollapse?'64px':'200px'">
        <el-radio-group v-model="isCollapse" style="margin-bottom: 20px;">
            <el-radio-button :label="false">展开</el-radio-button>
            <el-radio-button :label="true">收起</el-radio-button>
        </el-radio-group>
        <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
    <el-submenu index="1">
    <template slot="title">
      <i class="el-icon-location"></i>
      <span slot="title">导航一</span>
    </template>
    <el-menu-item-group>
      <span slot="title">分组一</span>
      <el-menu-item index="1-1">选项1</el-menu-item>
      <el-menu-item index="1-2">选项2</el-menu-item>
    </el-menu-item-group>
    <el-menu-item-group title="分组2">
      <el-menu-item index="1-3">选项3</el-menu-item>
    </el-menu-item-group>
    <el-submenu index="1-4">
      <span slot="title">选项4</span>
      <el-menu-item index="1-4-1">选项1</el-menu-item>
    </el-submenu>
  </el-submenu>
  <el-menu-item index="2">
    <i class="el-icon-menu"></i>
    <span slot="title">导航二</span>
  </el-menu-item>
  <el-menu-item index="3" disabled>
    <i class="el-icon-document"></i>
    <span slot="title">导航三</span>
  </el-menu-item>
  <el-menu-item index="4">
    <i class="el-icon-setting"></i>
    <span slot="title">导航四</span>
  </el-menu-item>
</el-menu>
</el-aside>
     <el-container>
        <el-header>
            <div>
                <img src="../../assets/images/nai.gif">
            </div>
            <span>这是一个莫名其妙的项目</span>
            <div>
                <img src="../../assets/images/wz.gif">
                <el-dropdown>
            <span class="el-dropdown-link">
    <i class="el-icon-arrow-down el-icon--right"></i>
            </span>
        <el-dropdown-menu slot="dropdown">
    <el-dropdown-item>个人中心</el-dropdown-item>
    <el-dropdown-item>控制台</el-dropdown-item>
    <el-dropdown-item @click.native="logout()">退出</el-dropdown-item>
  </el-dropdown-menu>
</el-dropdown>
            </div>
        </el-header>
        <el-main><router-view/></el-main>
     </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
    data() {
      return {
        isCollapse: true
      };
    },
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      },
      //点击退出回到登录页面
      logout(){
          if(confirm("你真的要离开我嘛?")){
              this.$router.push({ path:'/' });
          }
      }
    }
}
</script>

<style lang="less" scoped>
 .el-dropdown-link {
    cursor: pointer;
    color: #409EFF;
  }
  .el-icon-arrow-down {
    font-size: 12px;
  }
.el-header{
    span{
        color: rgba(192, 52, 192, 0.724);
    }
}
.el-header{
    font-size: 20px;
    display: flex;
    /* 以空格键为中心挂两边 */
    justify-content: space-between;
}
img{
    width: 60px;
    height: 60px;
    border-radius: 50px;
}
.el-menu{
    background-color: #333;
    font-size: 28px;
    color: white;
}
.el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
  }
.el-header, .el-footer {
    background-color: #B3C0D1;
    color: #333;
    text-align: center;
    line-height: 60px;
  }
  
  .el-aside {
    background-color: #D3DCE6;
    color: #333;
    text-align: center;
    line-height: 200px;
  }
  
  .el-main {
    background-color: #E9EEF3;
    color: #333;
    text-align: center;
    line-height: 160px;
  }
  
  body > .el-container {
    margin-bottom: 40px;
  }
  
  .el-container:nth-child(5) .el-aside,
  .el-container:nth-child(6) .el-aside {
    line-height: 260px;
  }
  
  .el-container:nth-child(7) .el-aside {
    line-height: 320px;
  }
</style>